Kajian beberapa Metode Penentuan Laju Infiltrasi pada Tanah Inceptisol

Abstract

Study of Several Methods for Determining Infiltration Rates in Soils, supervised by Prof. Dr. Ir. Sumono, MS Inceptisol soil is a soil that is developed further with a low structure and loose consistency, where limited water is one of the factors so that inceptisol soil has not been widely used for agricultural land, so it is necessary to know the rate of infiltration in inceptisol soil with several methods of determining the infiltration rate. The purpose of this study was to calculate the infiltration of inceptisol soil with several infiltration measurement methods, namely the Philips, Kostiakov and Horton methods. This research was carried out in the Tridarma Forest, University of North Sumatra, with three repeated measurements, from the results obtained soil infiltration infiltration rate equation Philips (fp = 0.1 t -0.5 + 0.036), Kostiakov (fp = 0.16 t -0,3) and Horton (ft = 0.021+(0.112 ) e -0,01 t) and the cumulative infiltration equation of Philips (F = 0.2 t 0.5+ 0.036 t), Kostiakov (F= 0.23 t0,69) and Horton (F= 0.105 + (11,2) (1-e-0.01t ). Horton's method is a more suitable method than Philip and Kostiakov's method, judging from the smaller standard deviation of each method, where Horton (0.14), Philip (0.33) and Kostiakov (0.42).